Chapter 4 Fiber Analysis

Front

What is a plant fiber?

Back

Plant fibers are natural fibers obtained from plants, used in textiles and other materials.

Front

Which fiber is not considered a plant fiber?

Back

Silk is not a plant fiber; it is an animal fiber produced by silkworms.

Front

What are natural fibers?

Back

Natural fibers are fibers derived from plants, animals, or minerals, and they are biodegradable.

Front

What is a characteristic of natural fibers?

Back

Natural fibers are affected by microscopic organisms, which can lead to degradation.

Front

What are two methods of fiber analysis that do not damage fibers?

Back

Polarizing light microscopy and infrared spectroscopy are non-destructive methods of fiber analysis.

Front

What types of fibers are typically investigated at a crime scene?

Back

Unique and unexpected fibers are often investigated at crime scenes for forensic analysis.

Front

What is the significance of fiber analysis in forensic science?

Back

Fiber analysis can help link a suspect to a crime scene or victim by matching fibers found.

Front

What are some common sources of natural fibers?

Back

Common sources of natural fibers include cotton, wool, silk, and linen.

Front

What is the role of polarizing light microscopy in fiber analysis?

Back

Polarizing light microscopy helps identify the optical properties of fibers without damaging them.

Tags

NGSS.HS-PS4-5

Front

How does infrared spectroscopy work in fiber analysis?

Back

Infrared spectroscopy identifies fibers based on their molecular vibrations and chemical composition.

Tags

NGSS.MS-PS1-1

NGSS.MS-PS4-2